clippingNode新手引导

GameLayer.lua

GameLayer = class("GameLayer",function()    return cc.Layer:create()end)function GameLayer:create()    local view = GameLayer.new()    view:__init()    return viewendfunction GameLayer:__init()    local whiteColor = cc.c3b(255,255,255)         local layerColor = cc.LayerColor:create(whiteColor)    self:addChild(layerColor)    local btn1 =  ButtonEx:create("按钮1", function() end)    btn1:setPosition(winSizeWidth/2 - 100,winSizeHeight/2)    self:addChild(btn1)        local btn2 =  ButtonEx:create("按钮2", function() end)    btn2:setPosition(winSizeWidth/2,winSizeHeight/2)    self:addChild(btn2)            local btn3 =  ButtonEx:create("按钮3", function() end)    btn3:setPosition(winSizeWidth/2 + 100,winSizeHeight/2)    self:addChild(btn3)        local callback = function()        local scene = cc.Scene:create()        scene:addChild(SecondLayer:create())        cc.Director:getInstance():replaceScene(scene)    end        self:addChild(GuideLayer:create({btn2}, callback))end

GuideLayer.lua

GuideLayer = class("GuideLayer",function()    return cc.Layer:create()end)function GuideLayer:create(nodeList, callback)    local view = GuideLayer.new()    view:__init(nodeList, callback)    return viewendlocal function onTouchBegan(touch, event)    local gameLayer = event:getCurrentTarget()    local locationInNode = touch:getLocation()    gameLayer.touchListener:setSwallowTouches(false)        for i, v in ipairs(gameLayer.nodeList) do        local node = gameLayer.nodeList[i]        local s = node:getContentSize()        local rect = cc.rect(node:getPositionX() - s.width/2, node:getPositionY() - s.height/2, s.width, s.height)          if cc.rectContainsPoint(rect, locationInNode) then            if gameLayer.callback then                gameLayer.callback()            end            return false        end    end    gameLayer.touchListener:setSwallowTouches(true)    return trueendfunction GuideLayer:__init(nodeList, callback)        self.nodeList = nodeList    self.callback = callback    --1.    local clippingNode = cc.ClippingNode:create()    self:addChild(clippingNode)        --2.被裁剪的层    local grayLayer = cc.LayerColor:create(grayColor)    grayLayer:setOpacity(150)    clippingNode:addChild(grayLayer)        --3.镂空模型    local stencil = cc.Node:create()    clippingNode:setStencil(stencil)        clippingNode:setInverted(true)    clippingNode:setAlphaThreshold(0.05)        --镂空具体的区域    for i, v in ipairs(nodeList) do        local node = nodeList[i]        local layer = cc.LayerColor:create(grayColor, node:getContentSize().width, node:getContentSize().height)        layer:setPosition(node:getPositionX() -node:getContentSize().width/2,  node:getPositionY() -node:getContentSize().height/2)        stencil:addChild(layer)    end        --事件触摸    local touchListener = cc.EventListenerTouchOneByOne:create()    touchListener:registerScriptHandler(onTouchBegan,cc.Handler.EVENT_TOUCH_BEGAN)    cc.Director:getInstance():getEventDispatcher():addEventListenerWithSceneGraphPriority(touchListener, self)    self.touchListener = touchListenerend